SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '862315fd142374d1c05818116f303fba02c5b8b228308b984664588d9a817fa0' 
  AND token = '2Vq7QNhGDAjdxvWjCw9pKAygA/tDo58Js0PFk/ce0jM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}